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CondominiumResidential
$685,000$536 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 96How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $665,000 on Sep 14, 2026

1850 FOLSOM ST

BOULDER, CO 80302
Building report
2
Beds
1.8
Baths
1,277 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
25 ft²
Lot SizeThe size of the land the home sits on, from county records.
1971
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$685K
$660K low$710K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$665,000 · Sep 14, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,147 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$41,763 (2026)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$41,763
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$46,403
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$682,400

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.27 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.34%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.1 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountyBOULDER
Lot (acres)The size of the land the home sits on, from county records.0.00
ConstructionThe main material the home's frame and walls are built from.Masonry/Concrete Masonry Units (Cmus)
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Central
GarageWhether the property has a garage, and details like whether it is attached to the home.Carport (Unspecified)
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(3)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Whittier International Elementary SchoolA
Elementary · Grades KG–5 · 0.4 mi
H
Boulder High SchoolA+
High · Grades 9–12 · 0.7 mi
M
Casey Middle SchoolC
Middle · Grades 6–8 · 1.0 mi

District: Boulder Valley School District Re-2

Neighborhood · ZIP 80302These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.134
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.92
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.46

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.91%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.37%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.27%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.31,245
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.324 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$82,366
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$127,191
Average tempThe average temperature here across a full year.45°F
Annual precipHow much rain and melted snow falls here in a typical year.22 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.69%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

1850 Folsom St measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth less than 76% of homes in Boulder 80302
  • Costs less per square foot than 80% of homes in Whittier
  • Smaller than 76% of homes in Boulder County
  • Among the smallest lots in Whittier
  • Older than 73% of homes in Boulder County

What homes are worth in Boulder 80302

Each bar is how many homes fall in that price range. The marker is this home.

This home
$294K$4.6M

This home is worth more than 24% of homes in Boulder 80302.

How it measures up in Boulder 80302

The dot is this home. The mark in the middle is the typical home in Boulder 80302.

Estimated value$685,000
CheaperTypical $1,123,259Pricier

Pricier than 24% of homes nearby

Price per ft²$536
CheaperTypical $637Pricier

Pricier than 33% of homes nearby

Living area1,277 ft²
SmallerTypical 2,019 ft²Bigger

Bigger than 27% of homes nearby

Lot size25 ft²
SmallerTypical 0.24 acBigger

Smaller than almost all homes nearby

Year built1971
OlderTypical 1970Newer

Newer than 53% of homes nearby

How 1850 Folsom St ranks against every home in each area.
MeasureThis homeWhittierBoulder 80302Boulder County
Estimated valuepricier than$685,00041% of homes24% of homes45% of homes
Price per ft²pricier than$53620% of homes33% of homes79% of homes
Living areabigger than1,277 ft²42% of homes27% of homes24% of homes
Lot sizebigger than25 ft²almost no homesalmost no homesalmost no homes
Year builtnewer than197154% of homes53% of homes27% of homes

About 1850 Folsom St

How much is 1850 Folsom St, Boulder, CO worth?

The TopHap Estimate for 1850 Folsom St, Boulder, CO is $685,000 as of Aug 30, 2026. The likely range is $659,875 to $710,125. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1850 Folsom St, Boulder, CO last sell?

1850 Folsom St, Boulder, CO last sold on Sep 14, 2026 for $665,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 1850 Folsom St, Boulder, CO?

1850 Folsom St, Boulder, CO has 2 bedrooms, 1.8 bathrooms, 1,277 square feet of living space and a 0.00-acre lot.

When was 1850 Folsom St, Boulder, CO built?

1850 Folsom St, Boulder, CO was built in 1971, making it 55 years old. It is a condo/apartment home. The building has 1 story.

What schools serve 1850 Folsom St, Boulder, CO?

1850 Folsom St, Boulder, CO is assigned to Whittier International Elementary School (elementary), rated A; Boulder High School (high), rated A+; Casey Middle School (middle), rated C. All sit in Boulder Valley School District Re-2. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1850 Folsom St, Boulder, CO compare to other homes in Boulder 80302?

Among the 7,990 homes in Boulder 80302, it is worth more than 24% of them ($685,000 against a typical $1,123,259), its price per square foot is higher than 33% of them ($536 against a typical $637), it is bigger than 27% of them (1,277 ft² against a typical 2,019 ft²), its lot is bigger than almost none of them (25 ft² against a typical 0.24 ac) and it is newer than 53% of them (1971 against a typical 1970). Measured against all of Boulder County, it is worth more than 45% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 1850 Folsom St, Boulder, CO?

The 2025 property tax bill for 1850 Folsom St, Boulder, CO was $4,147. The county assessed it at $41,763.

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